Engine.



, PATENT-ED- MAR. 10, 1908; W; A. EDWARDS, 0. B. ELLIS & 1). P. CORNELL.ENGINE.

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N o.=881,310. v PAVTENTED MAR. 10, 1908 W. A. EDWARDS, E. ELLIS & D. F.CORNELL.

' ENGINE.

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1101881310. PATENTED MAR. 10, 1908r I W. A. EDWARDS, G: B. ELLIS & D. F.CORNELL.

ENGINEL.

' APPLICATION FILED FEB. 23. 1907.

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lM/ZZDHE I \X/ITNESSEE jmawm No. 881,310. PATENTE D MAR. 10,1908.

W. A. EDWARDS, G. E. ELLIS & D. F. CORNELL.

ENGINE. APPLICATION FILED FEB. 23, 1907 4 SEBETSSHEET 4.

' P 1M2: um 5 WITNESSES Wand/ fdawmmw )7 Z hm'w xi, zillw WILLIAM A.EDwARDs, oHARLEs E. ELLIs, AND DAVID F. CORNELL, or ROCHESTER, MIN-NESOTA, AssIeNoRs 'ro EDwARDs, ELLIS & CORNELL COMPANY, OF ROCHESTER.

' MINNESOTA, A CORPORATION.

ENGINE.

Speeificationof Letters Patent.

Patented March 10, 1908.

Application filed February 23, 1907. Serial N 0. 368,962.

To all whom it may concern:

'Be itknown that we, WILLIAM A. ED- WARDS, CHARLES E: ELLIS, and DAVIDF. CORNELL, of Rochester, in the count of Olmsted and State ofMinnesota, have jointly invented certain new and useful Improve-- mentsin Engines, of which the following is a specification.

Our invention relates to certain new and useful improvements in engines,and the object of our improvements is to construct an engine which willhave greater efficiency, be easier running and lighter in construction.

With this object in view, our invention consists in an engine in whichthe piston and cylinder reciprocate, and in which the piston andcylinder always remain in line during their cycle of movement.

Our invention also consists in certain constructions, arrangements andcombinations of parts, one 'form of which will be first described inconnection with the accompanying drawings, and then the inventionparticularly pointed out in the claims.

For the sake of illustration we will describe our invention inconnection with an explosive engine. It is to be understood, howeverthat our invention, in its broadest scope is not limited to such use,but is equally well adapted for engines, using heat, air, steam or otherfluid as the source 01 power.

Referring to the drawings wherein We show one embodiment of ourinvent-ion and wherein the same part is designated by the samereferenceeharacter wherever it occurs, Figure 1 is a sine elevation 01'a gas engine constructed in accordance with our invention. Fig. 2 is aView similar to Fig. 1, showing however the cylinder, piston and valvemechanism in central, longitudinal section. F ig. 3 is a side elevation,looking at right angles to Fig. 1, parts being omitted to more clearlyshow the construction. Fig. 4 is a top plan view of the cylinder head.Fig. 5 is a section taken on line 5, 5 of Fig. 2, the arts outside thecylinder'head being'omitted Fi 6 is a section taker-1'on line6,-6 ofFig. 2, lodlring in the direction of the arrow, and Fig. 7 is a sectiontaken on line 7, 7 of Fig. 3, looking in the direction of the arrow.tion looking at right angles to Fig. 2. Fig. 9 is a detail perspectiveview of the upper portion of Fig. '8; showing the parts substantiallyFig. 8 is a side elevamidway of the stroke of the engine, and'Fig.

10 is a view similar to Fig. 9, showing however'the parts slightly morethan 180 around from the position shown in Fig. 9.

1 designates the base of the en inc from which extends the verticaluprig ts -2-'2, and 3 designates a crank shaft mounted in suitablebearings in the uprights 2. i

4, 4 are flywheels mounted on the crank shaft 3 and outside the frame 2.

5 designates a cylinder which is provided near its upper end with theoutwardly extending trunnions 6, 6, the outer ends of which arejournaled in cross-heads 7, 7 "sliding' on guide ways 8, 8, formed onthe inner sides of the uprights 2.

9 designates the piston from which fixedly extends the piston rod orstem 10, connected to the crank shaft 3, and 11, 11 a pair of connectingrods extending from the trunnions 6 to the crank shaft 12 12 are thecrank portions for the connecting rods 11, and 13 is the crank portionfor the piston rod 10.

It will be noted that the crank 13 is substantially 180 from the cranks12, 12, and that the length of the crank portion 13 is substantiallyequal to the length of the crank portions 12. From this it will be seenthat the piston and cylinder will, in the form of construction sh own,have an equal and opposite movement. It is to be understood however thatthe relative position of these cranks and the relative length thereof isentirely immaterial, and may be varied if desired.

In the head 14 of the cylinder, we provide an intake valve 15, and anexhaust valve 16. In the form of construction shown these valves are ofthe ordinary inwardly opening type and are held against their seats bymeans of the springs 11', 17.

18, 18 designate a pair of brackets extending up from the top of thecylinder head 1.4, in which is mounted the valve operating shaft 19,carrying valve operating earns 20, 21. These cams "are in line with thevalves 1.5 and 16 respectively, and are so set on the 100 shaft 19 as toopen and close the intake and exhaust valves. 22 is a second shaftmounted in the brackets 18, said shaft carrying a gear 23 meshing with agear 24 on the shaft 19, whereby the cam carrying shaft -'-is 105actuated.

25 designates an arm in the form of a link been possible, and at thesame time enabling secured to one end of the shaft 22, and 26 is a pinfast on a bracket 27 secured to the upper ends of the sides to theframe, the pin extendin in to the slot of the link. y means 0 thisconnection the shaft 22 is given a revolution for each completereciprocation of the engine.

28 designates the intake port which is shown as being connected to acarbureter 29 by means of a pipe connection 30, the carbureter 29 beingshown as supported upon a bracket 31, extending out from one of the sideframes 2. In the form of construction shown, the connection between thepipe 30 and the carbureter at one end thereof, and the intake port atthe other end, is effected by means of a socket 3232, formed on thecarburetor and intake port respectively, and a sleeve 33, 33 slidablymounted at each end ofthe pipe 30, the outer end of each of thesesleeves being ball shaped in order to tightly fit the sockets 32. 34 isa spiral spring encircling the pipe 30 and pressing at each end againsta sleeve 32, wl'lereby the ball ends of the sleeves are held in theirsockets, and the necessary yield to the connection provided. 35designates the exhaust port which, in the form of construction shown,exhausts directly into the atmosphere, but which, as will be understood,may be connected to a muffler, condenser or other exhaust handlingdevice.

It being remen'lbered' that the piston and cylinder move simultaneouslyin opposite directions, and that in the form of construction by which wehave illustrated our invention, the engine is of the four-cycle type, itwill be understood that upon one downward stroke of the piston and thesimultaneous upward movement of the cylinder a charge will be drawn intothe cylinder through the valve 15, and this charge will be compressedwhen the piston moves upward and the cylinder downward during theseeondhalf of this revolution, and that the charge will then be explodedthrough. a spark furnished by means of an. ordinary spark plu 36 whenthe piston will be driven down. and the cylinder upward, bothmovingunder the influence of the explosion until this half revolution has beencon' pleted, and then upon the next half revolution, the exhaust valvebeing open, the

l l l l movement of the cylinder and piston will a be to exhaust theexploded charge. it will be noted that the cylinder has an oscillatorymovement on its trunnions, keeping the piston rod always in line withthe axis of the cylinder and causing the thrust thereof to be always ina right line, the cylinder itself being connected to its cranks by meansof the. connecting rodsd l. The effect of this construction is to cause.a greater percentage of the energy developed in the cylinder to be de-.livered to the crank shaft than has heretofore l l l t i t t l theparts to be made lighter because of the fact that the crank shaft takessubstantially all the strain off the frame and that the strains on thecrank shaft are opposed and balanced.

While we have described our invention in connection with an explosiveengine, it is to be understood that the rineiples of our in vention areequally welf adapted for use in connection with steam, air, caloric orother engine operated by fluid, and that in. the foregoing specificationwe have only de scribed one form of mechanism for carrying out ourinvention, and that our invention is not to be limited to the means andmechanism shown and described.

1. In an engine, the combination with a cylinder having reciprocatoryand oscillatory movements, of a piston in said cylinder, said pistoncomprising a head and a stem lLxed thereto, a crank shaft to which saidstem is directly connected,- and a connecting rod connecting thecylinder to the crank shaft.

2. In an engine, the combination with a cylinder having reciprocatoryand oscillatory movements, of a piston in said cylinder, said pistoncomprising a head and a stem fixed thereto, a crank shaft having cranksdis posed substantially opposite each other, said stem being directlyconnected to one of said cranks, and a connecting rod connecting thecylinder to the other crank.

3. In an engine the combination with a cylinder having reciprocatory andoscillatory movements, of a piston in said cylinder, said pistoncomprisin a head and a stem fixed thereto, a crank s aft having a pairof cranks disposed in axial alinement on one side thereof, and a thirdcrank disposed substantially opposite the first two mentioned cranks,said stem being directly connected to said third crank, and connectingrods connecting the cylinder with. said pair of cranks.

4'. In an explosive engine the combination with a cylinder having areciprocatory movement, of a piston in said cylinder, a crank shaft towhich said piston and cylinder are both connected, a stationarycarburetor, a pipe and connections between the pipe and the cal'lulreterand the pipe and the cylinder whereby the cylinder may move in relationto the cm'bureter, without breaking said connections.

ln an engine the -ombination with a frame, of a cylinder pivotally andslidahly mounted in said frame, a piston in said eylinder, said pistoncomprising ahead and a stem [ixed thereto, a crank shaft journaled inthe frame to which said stem is directly connected, and a connecting rodconnecting the cylinder and the crank shaft.

6. In an explosive engine the combination with a frame of a cylinderpivotally and slidably mounted in said frame, a piston in said cylinder,a crank shaft j curnaled in the frame wherebi the movement of thecylinder frame to which the piston is connected, a connectin rodconnecting the cylinder and v crank sha t, valves 0n the cylinder for0on trolling the,su ply and exhaust from the cylinder, a shal meanswhereby the shaft will operate the valves; an arm on said shaftconnected to the t mounted on the cylinder,

e shaft. WILLIAM A. EDWARDS. CHARLES E. ELLIS. DAVID -F. CORNELL.

will operate t Witne'sses:

LILLIAN EDWARDS, MINNIE E. ELLIS.

